From: Pierre Ossman <drzeus@drzeus.cx>
Date: Wed, 8 Nov 2006 22:03:10 +0000 (+0100)
Subject: mmc: Support for high speed SD cards
X-Git-Tag: v2.6.20-rc1~34^2~40^2~464^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7ccd266e676a3f0c6f8f897f58b684cac3dd1650;p=pandora-kernel.git

mmc: Support for high speed SD cards

Modern SD cards support a clock speed of 50 MHz. Make sure we test for
this capability and do the song and dance required to activate it.

Activating high speed support actually modifies the TRAN_SPEED field
of the CSD. But as the spec says that the cards must report 50 MHz,
we might as well skip re-reading the CSD.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
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